Add ppc64 support to architecture

[ramereth]

I'm working on getting chef built on ppc64 but ran into an issue with building openssl. I discovered that ppc64 is not an architecture that omnibus knows about looking at libs/omnibus/software.rb:426. I would like to have it added so that it can be used in omnibus-software. I'll try submitting a PR soon.

Currently it only supports sparc and defaults to intel otherwise.

[sethvargo]

@ramereth so is this an issue with omnibus-ruby? I don't quite understand why it's opened here...

[ramereth]

The problem is I want to use if architecture == "ppc64" much like how omnibus-software/config/software/openssl.rb does it for sparc. However omnibus-ruby only supports sparc. Ideally it should just work for other archs. Perhaps a better solution is to use powerpc if machine type returns either ppc or ppc64.

[sethvargo]

@ramereth, so that's really an Ohai issue then, no? /cc @mcquin

[ramereth]

I'm not sure why it isn't just using what Ohai.kernel['machine'] returns but I assume in the case of sparc they have multiple machine types and also simplifying anything running on intel (instead of doing i686 and x86_64, etc). In the case of powerpc it would just be ppc and ppc64 and maybe ppc64le (i.e. /ppc/ should catch it).

[sethvargo]

So - here's the code:

# Return the architecture of the machine, as determined by Ohai.
# @return [String] Either "sparc" or "intel", as appropriate
# @todo Is this used?  Doesn't appear to be...
def architecture
  Ohai.kernel['machine'] =~ /sun/ ? 'sparc' : 'intel'
end

@lamont-granquist what are you thoughts here? Should we just make architecture return Ohai.kernel['machine']?

@ramereth you have access to the OHAI data object too, so you can just check the kernel using OHAI.kernel['machine'] instead of architecture.

[sethvargo]

@ramereth you can get the true value of machine using Ohai.kernel['machine'] in a definition.

[lamont-granquist]

this method should clearly die and we should use the Ohai object directly per your mass-commit to convert to that...

[sethvargo]

That method is deprecated on master